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(No Model.)

P. M. DAHL' & R. E. POINDEXTER.

SAW.

Patented June 2,1896.

i INVENTORS,

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UNITED STATES PATENT *OFFICE- PETER M. DAIIL AND ROBERT E. POINDEXTER,OF INDIANAPOLIS, INDIANA, ASSIGNORS TO THE E. O. ATKINS & COMPANY, OFSAME PLACE.

SAW.

SPECIFICATION forming part of Letters Patent No. 561,094, dated June 2,1896.

Application filed April 20, 1895.

' specification.

0 ur invention relates to inserted-tooth saws, and particularly to thatclass in which the tooth-points or cutting portions are bifurcated andembrace the tooth-shanks on the sawblade; and it mainly consists incertain means whereby said tooth-points are fastened to said saw-bladewithout the use of rivets or other separate attaching portions ordevices A saw provided with such tooth-points and embodying our saidinvention will be first fully described,and the novel features thereofthen pointed out in the claims.

Referring to the accompanying drawings, which are made a part hereof,and on which similar letters of reference indicate similar parts, Figure1 is a side elevation of a fragment of a saw-blade constructed inaccordance with our said invention; Fig. 2, a front edge elevation, andFig. 3 a detail partially sectional view as seen from the dotted line 33 in Fig. 1.

In said drawings the portions marked A represent the saw-blade, and Bthe toothpoints to be used therewith.

The saw-blade A is mainly of an ordinary construction and hastooth-shanks A proj ecting therefrom, near the point of which areoffsets or notches, as at a. Recesses a having an overhanging edge at c,and preferably forming somewhat more than one-half of a circle or formedwith a mouth not as wide as the widest part of said recesses, are formedin the saw-plate at the lower ends of the toothshanks below what areusually the throats of the saw-teeth.

The tooth-points B are bifurcated or provided with wings, which fit overthe sides of the forward or outer portions of the toothshanks A. Theyare also provided with projections p, which are adapted to fit into andbe held by the notches a when the parts are Serial No. 546,496. (Nomodel.)

assembled. The upper or bifurcated portions terminate in small pointsI), extending back therefrom, which are adapted to fit around theextreme points of the tooth-shanks A and be bent into the offsets ornotches at a, as shown most plainly in Fig. 2. The mode of insertingthese tooth-points and attaching them to the adjacent portions of thesawblade is as follows: The tooth-point is first placed in the positionshown at the point marked No. 4 in Fig. 1 alongside the sawplate and ismoved sidewise until the bifurcation therein registers with the edge ofthe tooth-shank, so that the wings are in position to swing back, sothat one shall be on each side of the saw-plate, as shown. It is thentipped back to the position shown at the point marked No. 3, after whichthe points I) are bent inwardly by an appropriate tool, as shown at thepoints marked No. 1 and N o. 2. The tooth-points are thus firmly andsecurely held in place, as will be readily understood, and preferablywithout the use of rivets or any other separate devices,although theadvantages of our invention may measurably be attained by making thepoints I) somewhat larger and providing them with rivet-holes and arivet which shall pass over the sawplate at the point a. By thisarrangement a rivet-hole in the saw-plate is avoided equally as well aswhen the points I) are bent in.

Having thus fully described our said invention, what we claim as new,and desire to secure by Letters Patent, is

1. The combination of the saw-plate having tooth-shanks thereon andrecesses a having an overhanging edge somewhat more than one-half of acircle, of tooth-points B having similarly-formed projections adapted tofit into said recesses and bifurcated at the upper portions, theconsequent wings being extended into points 5 adapted to be bent in;wardly behind the tooth-shanks, whereby said tooth-points are held inplace, substantially as set forth.

2. The combination with a saw-plate having recesses the mouths of whichare not as wide as their widest diameter, of tooth-points havingprojections corresponding in form to said recesses and adapted to beinserted our hands and seals, at Indianapolis, Indiana, therein from theside and beheld by said eonthis 18th day of April, A. D. 1895.

tract-ed mouths, and Wings extending back PETER M. DAIIL. [1. s]

alongside said saw-plate and adapted to be ROBERT E. POINDEXTER. [u s] 5secured thereto outside said saw-p1ate, sub- Witnesses:

stantially as set forth. CHESTER BRADFORD,

,In witness whereof we have hereunto set JAMES A. WALSH.

